T-SQL 查詢匯總所有年份的銷售額：每年每月總計，以及每月累計金額

Question

我需要創建一個銷售報告，顯示每月所有年份的銷售額和累計銷售額。 數據庫表很簡單：

Transactions 
(
    ID INT, 
    TransactionDate DATETIME, 
    SalesAmount MONEY
)

我希望結果看起來類似於下面的 ExcelSheet（我只顯示 2017/2018 年的金額，但實際查詢需要根據 TransactionDate 返回所有可用年份的結果）

Answer 1

這是聚合和累積總和：

select year(TransactionDate), month(TransactionDate),
       sum(SalesAmount),
       sum(sum(SalesAmount)) over (partition by year(TransactionDate) order by min(TransactionDate))
from Transactions
group by year(TransactionDate), month(TransactionDate)
order by year(TransactionDate), month(TransactionDate);

Answer 2

嘗試一下：

With Q 
as
(
   Select DatePart(yyyy,TransactionDate) 'Year',DatePart(m,TransactionDate) 'Month',  sum(SalesAmount) 'Sales'
   From Transactions 
   Group by DatePart(yyyy,TransactionDate),DatePart(m,TransactionDate)
) 
Select q.Year,q.Month,q.sales,( Select sum(q1.Sales)
        From Q q1
        Where q1.Year=q.Year
         And  q1.Month <= q.Month
        ) 'Cumulative Sale'
From Q q
Order by q.Year,q.Month

Answer 3

嘗試這個：

with cte as
(
select year(TransactionDate) as Year, month(TransactionDate) as Month, SalesAmount 

)

 select a.Year, a.Month, a.SalesAmount, sum(b.SalesAmount) as cumulativeSalesAmount 
 from Transactions  a inner join Transactions  b on a.STORE_ID = b.STORE_ID and a.Year = b.Year and a.Month >= b.Month
 group by a.Year, a.Month
 order by 1, 2